Honeysuckle fermented feed on the growth performance and blood biochemical indexes of heat-stressed meat ducksand intestinal fatty acid content
This study was conducted to explore the effects of honeysuckle fermented feed on the growth performance,blood biochemical indexes and intestinal fatty acid content of heat-stressed ducks.In this study,200 1-day-old Peking ducks with an average weight of(50±1)g were randomly divided into two groups,and each group was set with 5 replicates,each replicate of 20 ducklings.Randomly divided into 2 groups,the control group was fed basal diet,the experimental group was fed 20% honeysuckle fermented feed and 80% basal diet mixed diet,the test was 42 days in total,1～21 days were carried out according to the normal feeding temperature,the 21～42 days of the experiment,the ambient temperature was maintained between 33～38℃from 11:00 to 17:00 every day,the relative humidity was maintained between 65%～70%,and the rest of the time was maintained at 22～24℃.The results showed that:(1)Feeding honeysuckle fermented feed could significantly increase the ABW,ADG and ADFI of heat-stressed broiler ducks(P＜0.05),but had no significant effect on the growth performance of broiler ducks bred at 1～21 days of conventional temperature(P＞0.05),and there was a trend of decreasing the feed-weight ratio,but the difference was not significant(P＞0.05).(2)Feeding honeysuckle fermented feed could significantly increase the serum contents of IgG,IgA,IL-4,T-AOC,SOD and serum glucose in heat-stressed ducks(P＜0.05),significantly reduce the content of MDA in serum(P＜0.05),there were no significant differences in serum IgM,GSH-Px,TNF-α and other indexes(P＞0.05).(3)Feeding honeysuckle fermented feed could significantly reduce the content of short-chain fatty acids in the cecum of broiler ducks(P＜0.05).
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